Maries County, Missouri Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 97th-largest in Missouri
The population of Maries County, Missouri is 8,435 as of the 2023 American Community Survey, making it the 97th-largest county in Missouri. The median household income is $61,359, the median home value is $193,100, and the median age is 45.4.
The population of Maries County has declined 7.1% since 2010 (9,159 → 8,506), a -0.53% annualized rate.
8,435
Population
-0.53%
Annual growth
16
People / sq mi
$61,359
Median Income
$193,100
Median Home Value
Maries County covers 527 sq mi of land at 16.0 people per square mile.
About Maries County, MO
Maries County is a county in Missouri with a population of 8,435. It ranks #97 among counties in Missouri by population. The median age is 45.4, older than the national median. The population is 50.1% male and 49.9% female.
The median household income in Maries County is $61,359, below the US median of $74,580. 8.9% of residents live below the federal poverty level. Home values sit at a median of $193,100, with monthly rent averaging $594. The homeownership rate of 77.9% is higher than the national rate of 64.8%.
Educational attainment in Maries County reflects 16.0% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 6.1% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 33.4 minutes each way.
Maries County Population History (2010-2024)
The county of Maries County had a population of 9,159 in 2010 and 8,506 in 2024, a -7.1% growth over 14 years. The peak was 9,170 in 2011. Average annual growth rate: -0.52%.
8,506
Population (2024)
9,159
Population (2010)
9,170
Peak (2011)
-0.52%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 9,159 |
| 2011 | 9,170 |
| 2012 | 9,020 |
| 2013 | 9,031 |
| 2014 | 8,998 |
| 2015 | 8,934 |
| 2016 | 8,823 |
| 2017 | 8,791 |
| 2018 | 8,795 |
| 2019 | 8,751 |
| 2020 | 8,451 |
| 2021 | 8,418 |
| 2022 | 8,434 |
| 2023 | 8,441 |
| 2024 | 8,506 |
Race & Ethnicity
| White | 93.5% |
| Black or African American | 0.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.8% |
| Two or More Races | 0.0% |
Age & Sex
45.4
Median Age
49.9%
Female
50.1%
Male
22.2%
Age 65+
Age Distribution
Children (under 15): 16.1% · Seniors (65+): 22.2%
Income & Poverty
| Median household income | $61,359$-7,561 vs state |
| Mean household income | $74,425 |
| Per-capita income | $31,622 |
| Poverty rate | 8.9%+0.5% vs state |
| Unemployment rate | 2.5% |
| Employment-to-population | 52.6% |
Top Industries by Employment
The largest employment sector in Maries County is professional & business services, accounting for 22.9% of workers.
How residents commute
0.0%
Drive alone
1.3%
Carpool
74.6%
Public transit
6.1%
Work from home
33.4 min
Avg commute
Housing
$193,100$-22,500 vs state
Median home value
$594
Median rent
77.9%
Homeownership rate
4,269
Total housing units
82.8%
Occupied
17.2%
Vacant
22.1%
Renter-occupied
Social & access
91.5%
With health insurance
86.6%
With broadband internet
18.2%
Foreign-born
12.3%
Veterans (18+)
23.1%
With a disability
97.6%
Speak language other than English at home
Education
86.1%
High School+
16.0%
Bachelor's+
Largest cities in Missouri
Other counties in Missouri
Part of Missouri
Metro areas in Missouri
County rankings
Frequently Asked Questions
Maries County, Missouri has a population of 8,435 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 97th-largest county in Missouri. Population density is 16 people per square mile.
The population of Maries County has declined 7.1% since 2010 (9,159 → 8,506), a -0.53% annualized rate.
The median household income in Maries County, Missouri is $61,359, with mean (average) household income of $74,425 and per-capita income of $31,622. 8.9% of residents live below the federal poverty level.
In Maries County, the largest racial and ethnic groups are White (93.5%), Hispanic or Latino (2.8%), Black or African American (0.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Maries County, Missouri is 45.4 years. Residents are 49.9% female and 50.1% male.
The median home value in Maries County is $193,100 and median monthly rent is $594. 77.9% of occupied housing units are owner-occupied. The county has 4,269 total housing units, 17.2% of which are vacant.
The largest employment sector in Maries County, Missouri is professional, scientific, and management services, employing 22.9% of workers. The unemployment rate is 2.5%.
Kansas City is among the largest cities associated with Maries County, Missouri, with a population of 508,233.
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Statewide data for Missouri
Population, race, income, age, and trends across Missouri
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.